u.s.a.   (TTS Sound)

The noun u.s.a. has 1 sense

• United States, United States of America, America, the States, US, U.S., USA, U.S.A. -- (North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776)

The noun usa has 1 sense

• United States Army, US Army, U. S. Army, Army, USA -- (the army of the United States of America; the agency that organizes and trains soldiers for land warfare)